In 1968, David Ogilvy wrote a letter that was distributed at New York's Grand Central Station to help raise money for an African-American college fund. The opening line asked readers to look out of the train window when they reached 108th Street. Seeing with their own eyes the homes of the impoverished black students, they donated $26,000 in one evening. A simple idea that proved incredibly powerful. And an inspiration for this blog on advertising creativity around the world.